Box-head-doweling machine



' I I 2 Sheets-Sheet 2. G. W. MOYERS. BOX HEAD DOWELING MACHINE.

(No Model.)

No. 536,224. Patented Mar. 26, 1895.

Snow H3020 UNITED STATES PATENT, OFFiCE.

GEORGE WILLIAM MOYERS, OF APOPKA, FLORIDA.

BOX-HEAD-IDOWELING' MACHINE.

SPECIFICATION forming part of Letters Patent No. 536,224, dated March 26, 1895. Application filed December 27, 1893. Serial No. 494,846. (No model.)

To all whom it may concern:

Be it known that I, GEORGE WILLIAM MOY- ERS, a citizen oftheUnited States, residing at Apopka, in the county of- Orange, State of Florida, have invented certain new'and use-. ful Improvements in Box-Head-Doweling Machines; and I do hereby declare the following twelve inches long and twelve inches wide v and have been made from best southern pine or cypress which is sawedinto boards one inch thick by twelve inches wide and cut into lengths of twelve inches, and twenty inches for vegetable box heads. This plan results in a waste of the outside or narrow sap boards which have been found to be best suitable for the purpose because. free from ch'ecks and lighter than the inside or heart boards.

The present invention relates to the machinery for automatically doweling the parts designed to form the heads. These parts are first cut the proper length and width-and bored to receive the dowels and are put together'by the mechanism which forms'the present invention. The dowel pins are previously prepared anddrivenby hand or placed in a hopper to be driven home in the manner herein set forth. i

In' the annexed drawings, forming part of the specification,-Figure 1 is a top plan view of a machine embodying my invention, parts being broken away and the hoppers being shown in section. Fig.2 is a section on the line 2 2- of Fig. 1 looking in the direction of the arrow. Fig. 3 is a section on the line 3'4:

' of Fig. 1 looking to the right.

bed I piece A mounted on a suitable frame. To one end of the bed piece A the pillow blocks B are rigidly bolted, and the stationary stop piece 0 is secured to the other end. The main shaft F revolves in the pillow blocks B. The

eccentric hub G is keyed onto main shaft F, and the eccentric strap H, and the connecting rod I connect the eccentric with the sliding head D which is secured on the bed piece A by. thegibs or guides E. The main shaft F carries a worm gear A which is operated by a worm A mounted on the frame 011 the under side of the worm gear.

The sliding head D may be operated by the eccentric G or' its equivalent acam or a crank to give it a reciprocating movement.

In operation, motion is imparted to the shaft F by means of the worm gear and worm. Every revolution of the shaft F causes the eccentric G or its equivalent a cam or a crank to impart a reciprocating movement to the sliding head D, causing it to move toward and from the stationary head 0. p g

7 When fed by hand without using the hoppers the one piece of board 0 having the pins in position is placed against the stationary head 0, andwhile the sliding head Dis withdrawn to admit of it the one piece of board P, having corresponding holes is placed between the sliding head D and the board with pins in it, and when the sliding head D moves forward the two pieces are brought firmly together, and so held by means of the dowel pins S.-these pins being squeezed in so tightly that no glue or other fastening is needed to hold them. When the head is thus combined and the sliding pieceD recedes enough to release the. box heads, it isremoved and two other pieces put in position tozbe combined at the next revolution of shaft F. These revolntions are so timed that one'box head may be combined at every revolution of shaft F the number being an average of about fiftee heads per minute.

Thefeeding of the several piecesmay be effected by hand, without the use of hoppers but it is preferred to effect this result by mechanical appliances and thus double the capacity of machines. other bedpiece A is mounted on the same For this purpose an KOO frame and provided with pillow blocks to support the shaft F. On the top of this bed piece A is mounted the hopper K, which has two compartments, the compartment N, for the dowel pins S and one compartment for the pieces of boards 0 with holes in them to receive the pins.

The sliding head D carries two plungers M, which at each revolution of the shaft F, force two pins into the bottom piece of boards 0. As soon as the plungers are withdrawn the pins S settle down in line and in position to be pushed forward at the next stroke of the plungers. As soon as the bottom board receives its pins, it is drawn out of the hopper K by a feed sprocket chain belt V with lugs V on it, and carried forward and stopped in exact position to be combined with the bottom board P in the hopper L. As soon as the piece 0 is moved out of the hopper K, the others settle down, until each in its turn, is filled with pins and carried forward to be combined each hopper being kept filled in the meantime with pins and boards from the top. This arrangement for inserting the pins avoids the labor of driving the pins by hand and insures speed and accuracy in alignment of the pins when the boards are brought in contact to be combined. The hopper L is filled with boards P having holes in them and mounted on the bed pieces A in such position that the sliding head D, passes into the hopper and forces one-the bottom piece-forward and combines it with the piece 0'. W'hile this movement is being made the sliding head carrying the two plungers M is making a corresponding movement and inserts two pins in the next piece to come forward and while both heads D and D are going back for the next forward stroke the sprocket chain belt V moves the combined box head out of the way and brings forward another piece from the hopper K and stops it in position to be combined, the distance between the hop: per K and the hopper L being so arranged that the intermittent or stop movement of the chain belt allows time for the pieces in each hopper to be operated upon while the chain is at rest.

The sprocket chain passes through the groove X and is operated by suitable mechanism for giving the necessary intermittent or stop motion while the sliding heads Figs. 3 and 4 are doing their work.

The shaft 3 is geared to the shaft F by miter gears and makes the same number of revolutions. On the shaft 3, is rigidly keyed the driving arm Y. In the outer end of this driving arm Y is carried a sliding stud Z. One end of this stud Z runs against the surface of a stationary ring or face cam Z and is kept in contact by means of a spiral spring carried between shoulders on the driving arm and stud. The other end of this stud Z when forced by the cam is made to engage with one of two studs carried in each arm of the hub X which revolves loosely on the shaft 3. At each revolution of the driving arm Y the stud Z is made to engage with one of the studs in the loose arm, and revolves it one-half revolution until it comes to the offset or recess in face of the cam Z when the spring causes it to releasethe loose arm and allows it to rest until the shaft makes one-half revolution while the sliding heads are doing their work and then it engages the stud in the opposite end of the loose arm, and thus alternately each end of the loose arm is engaged and released while the shaft revolves continuously. The sprocket wheel B being secured to the hub X thus receives the proper motion for the chain to handle the pieces being operated upon.

Having thus described my. invention, what I claim, and desire tosecure by Letters Patcut, is--- 1. In a machine for dowelin g box heads, the combination of a bed, a stop at one end of the bed for the box piece to rest against,a power driven shaft at the opposite end of the bed, reciprocating heads actuated by the said power driven shaft, hoppers located on the beds to receive the box head pieces, one of the hoppers having a compartment to receive the doweling pins, and a feeder to automatically carry the piece after receiving the dowel pins from one hopper to the other, substantially as described.

2. In a machine for doweling box heads, the combination of a bed, a stop at one end of the bed for the box piece to rest against, a power driven shaft at the opposite end of the bed, reciprocating heads actuated by the said power driven shaft, hoppers located on the beds to receive the box head pieces, one of the hoppers having a compartment to receive the doweling pins a feed chain, and. mechanism for intermittently operating the said feed chain, substantially as described for the purpose specified.

3. In a machine for doweling box heads, the combination-of a bed, a stop at one end of the bed for the box piece to rest against, a power driven shaft at the opposite end of the bed, reciprocating heads actuated by the said power driven shaft, hoppers located on the beds to receive the box head pieces, one of the hoppers having a compartment to receive the doweling pins, a feed chain having projections, a shaft operated from the said power shaft, a sprocket wheel mounted on the said second shaft, and a clutch mechanism to alternately engage with and release the said sprocket wheel, substantially as described.

t. In a machine for doweling box heads, the combination of a bed, a stop at one end of the bed for the box pieces to rest against, apower driven shaft at the opposite end of the bed, reciprocating heads, actuated by the said power driven shaft, hoppers located on the beds to receive the box head pieces, one of IIO the hoppers having a com partrnent to receive the doweling pins, a.feed chain,ashaft operated from the said power driven shaft, a sprocket wheel loosely mounted on the second shaft and having arms provided with projections, an arm keyed to revolve with the said shaft; and carrying a spring actuated stud, and acanl to move the said stud, to

cause it to engage withthe said projections, substantially as described. r 1 10 In testimony whereof I affix my signature in presence of two witnesses.

GEORGE WILLIAM MOYERS. Witnesses:

T. D. BOURLAND, S. GODFREY MOYERS. 

